WIKA S-11 Pressure Transmitter
WIKA S-11 Flush Diaphragm Pressure Transmitter
The WIKA S-11 Pressure Transmitter is a flush diaphragm pressure transmitter designed for precise electronic pressure measurement in hygienic and industrial process applications.
It is especially suitable for viscous, paste-like, adhesive, crystallising, contaminated and particle-laden media where conventional pressure ports may become clogged.
With stainless-steel process connections, vacuum-tight construction, multiple output signals and measuring ranges from low mbar/bar ranges up to high-pressure applications, the S-11 is suitable for food, beverage, filling, packaging, dosing, level measurement and general process industry applications.
Download WIKA S-11 Datasheet
Key Features
Flush Diaphragm Design
Designed for viscous, paste-like, adhesive, crystallising, contaminated and particle-laden media.
Wide Pressure Ranges
Available in gauge pressure, absolute pressure, vacuum and compound ranges in bar, mbar, MPa and psi.
Vacuum-Tight
Suitable for applications requiring reliable vacuum and negative pressure measurement.
High Accuracy
Standard accuracy ≤ ±0.5% of span, with optional ≤ ±0.25% of span for selected ranges.
High Temperature Option
Available with cooling element for medium temperatures up to 150 °C.
Food-Compatible Option
Optional system fill fluid according to FDA 21 CFR 178.3750 for food and beverage applications.
Flush Diaphragm Technology for Difficult Media
The WIKA S-11 uses a flush process connection with the wetted diaphragm integrated into the process. This helps prevent media from entering and blocking a conventional pressure channel.
This design is useful in processes with sticky, viscous, crystallising or particle-containing fluids, where dead spaces and clogged pressure ports can cause measurement errors or maintenance problems.
All flush process connections are made of stainless steel, fully welded, and isolate the medium from the pressure measuring instrument through a positive seal.
Measuring Ranges in bar, mbar, MPa and psi
The WIKA S-11 is available with a broad selection of measuring ranges. Gauge pressure versions cover low ranges such as 0 ... 0.1 bar and extend up to 0 ... 600 bar. The same range family is also available in mbar, MPa, psi and further engineering units.
For vacuum and compound pressure applications, ranges such as -0.6 ... 0 bar, -1 ... 0 bar, -1 ... +0.6 bar, -1 ... +1.5 bar, -1 ... +3 bar, -1 ... +5 bar, -1 ... +9 bar, -1 ... +15 bar and -1 ... +24 bar are available.
| Gauge pressure ranges | 0 ... 0.1 bar up to 0 ... 600 bar |
| Absolute pressure ranges | 0 ... 0.25 bar up to 0 ... 16 bar |
| Vacuum ranges | -0.6 ... 0 bar, -0.4 ... 0 bar, -0.25 ... 0 bar, -0.16 ... 0 bar, -0.1 ... 0 bar, -1 ... 0 bar |
| Compound ranges | -1 ... +0.6 bar up to -1 ... +24 bar |
| Other units | Available in mbar, MPa, psi and further pressure units |
| Vacuum tightness | Yes |
Technical Highlights
Output Signals
4 ... 20 mA, 0 ... 20 mA, DC 0 ... 10 V and DC 0 ... 5 V.
Power Supply
DC 10 ... 30 V or DC 14 ... 30 V depending on the selected output signal.
Accuracy
Standard ≤ ±0.5% of span; optional ≤ ±0.25% of span for measuring ranges ≥ 0.25 bar.
Fast Response
Settling time ≤ 2 ms for quick pressure signal response.
Ingress Protection
Available with IP65, IP67 or IP68 depending on electrical connection.
Approvals
EU conformity, CSA, EAC and 3-A sanitary option for hygienic G 1 B connection.
WIKA S-11 Technical Data
| Product type | Flush diaphragm pressure transmitter |
| Model | WIKA S-11 |
| Pressure type | Gauge, absolute, vacuum and compound pressure |
| Gauge pressure range | 0 ... 0.1 bar to 0 ... 600 bar |
| Absolute pressure range | 0 ... 0.25 bar to 0 ... 16 bar |
| Vacuum ranges | -0.6 ... 0 bar, -0.4 ... 0 bar, -0.25 ... 0 bar, -0.16 ... 0 bar, -0.1 ... 0 bar, -1 ... 0 bar |
| Compound ranges | -1 ... +0.6 bar, -1 ... +1.5 bar, -1 ... +3 bar, -1 ... +5 bar, -1 ... +9 bar, -1 ... +15 bar, -1 ... +24 bar |
| Other pressure units | mbar, MPa, psi and further units available |
| Output signal | 4 ... 20 mA, 0 ... 20 mA, DC 0 ... 10 V, DC 0 ... 5 V |
| Accuracy | ≤ ±0.5% of span standard; optional ≤ ±0.25% of span |
| Non-linearity | ≤ ±0.2% of span BFSL |
| Non-repeatability | ≤ 0.1% of span |
| Long-term stability | ≤ ±0.2% of span/year |
| Settling time | ≤ 2 ms |
| Rated temperature range | 0 ... 80 °C |
| Medium temperature without cooling element | -30 ... +100 °C standard; optional -30 ... +125 °C |
| Medium temperature with cooling element | -20 ... +150 °C |
| Ambient temperature | -20 ... +80 °C |
| Storage temperature | -40 ... +100 °C |
| Process connections | G ½ B flush, G 1 B flush, hygienic G 1 B flush |
| Wetted parts | 316Ti for G ½ B and G 1 B flush; 316L for hygienic G 1 B flush |
| Seal materials | NBR, FKM/FPM, EPDM and optional FFKM for selected connections |
| Internal pressure transmission medium | Synthetic oil standard; optional food-compatible system fill fluid according to FDA 21 CFR 178.3750 |
| Ingress protection | IP65, IP67 or IP68 depending on electrical connection |
Flush and Hygienic Process Connections
The S-11 is available with G ½ B flush, G 1 B flush and hygienic G 1 B flush process connections. These connections are designed for direct process integration and reliable sealing in difficult media.
The G ½ B flush version is available for measuring ranges from 0 ... 2.5 to 0 ... 600 bar. The G 1 B flush version is suitable for lower ranges from 0 ... 0.1 to 0 ... 1.6 bar. The hygienic G 1 B flush version, in accordance with 3-A sanitary standards, is available from 0 ... 0.1 to 0 ... 25 bar.
Cooling elements are available for high medium temperatures, while food-compatible fill fluid can be selected for applications in the food and beverage industry.
Typical Applications
The WIKA S-11 Pressure Transmitter is commonly used in hygienic and industrial process environments where accurate electronic pressure measurement is required for difficult media.
Output Signals and Electrical Connections
The WIKA S-11 can be integrated into PLC, control panels, automation cabinets and process monitoring systems through common industrial output signals.
| 2-wire current output | 4 ... 20 mA |
| 3-wire current output | 0 ... 20 mA |
| 3-wire voltage output | DC 0 ... 10 V or DC 0 ... 5 V |
| Power supply for 4 ... 20 mA | DC 10 ... 30 V |
| Power supply for 0 ... 20 mA | DC 10 ... 30 V |
| Power supply for DC 0 ... 10 V | DC 14 ... 30 V |
| Power supply for DC 0 ... 5 V | DC 10 ... 30 V |
| Electrical connections | Angular connector DIN 175301-803 A, M12 x 1 circular connector, cable outlet IP67, cable outlet IP68 |
| Protection | Short-circuit resistance, reverse polarity protection and overvoltage protection up to DC 36 V |
WIKA S-11 Datasheet
For detailed measuring ranges, mbar/bar/psi options, electrical connections, process connection dimensions, seal material options, approvals and ordering information, download the WIKA S-11 datasheet.
Download PDF DatasheetRelated Measuring Instruments
Frequently Asked Questions about WIKA S-11
What is the main advantage of the WIKA S-11?
Its flush diaphragm design helps prevent clogging in viscous, adhesive, crystallising and particle-laden media.
What pressure ranges are available?
Gauge pressure ranges are available from 0 ... 0.1 bar up to 0 ... 600 bar, with additional absolute, vacuum and compound ranges.
Is it available in mbar?
Yes. The WIKA S-11 measuring ranges are also available in mbar, MPa, psi and further engineering units.
Is it suitable for food and beverage applications?
Yes. A hygienic G 1 B flush connection and food-compatible system fill fluid according to FDA 21 CFR 178.3750 are available.
Which output signals are available?
The S-11 is available with 4 ... 20 mA, 0 ... 20 mA, DC 0 ... 10 V and DC 0 ... 5 V output signals.
Can it be used for high temperature media?
Yes. With an integrated cooling element, the transmitter can be used for medium temperatures up to 150 °C.
Why Choose LGN Group?
LGN Group supplies industrial instrumentation, pressure transmitters, process equipment, automation solutions and spare parts for the dairy, beverage, food, pharmaceutical and industrial sectors.
Our team assists customers in selecting suitable pressure measurement solutions based on operating pressure range, medium properties, process connection, output signal and hygienic requirements.
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